1925863940 has 384 divisors, whose sum is σ = 5879623680. Its totient is φ = 510105600.

The previous prime is 1925863913. The next prime is 1925863957. The reversal of 1925863940 is 493685291.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 23203139 + ... + 23203221.

It is an arithmetic number, because the mean of its divisors is an integer number (15311520).

Almost surely, 2^1925863940 is an apocalyptic number.

1925863940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1925863940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2939811840).

1925863940 is an abundant number, since it is smaller than the sum of its proper divisors (3953759740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1925863940 is a wasteful number, since it uses less digits than its factorization.

1925863940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 1925863940 is about 43884.6663425849. Note that the first 3 decimals coincide. The cubic root of 1925863940 is about 1244.1570375879.

The spelling of 1925863940 in words is "one billion, nine hundred twenty-five million, eight hundred sixty-three thousand, nine hundred forty".